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Linux specialist (Sec/Opt/Dev, C/Perl/Python/PHP/BASH)

Belarus
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Last active: 2 days ago
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Tests: 5
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Portfolio: 13

Important:
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Enhanced shield of your Web application with mod_security! Should be always. It is task #1 after installation ANY web application!
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About Me and more:
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I have over 16 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if I found some problems. And I am always interested in looking for mostly economical and productive solutions.
Of course, Cpanel, WHM, Webmin, Plesk .... I know how are working these web-wrappers and I support their. I can will tune and to make the checking of these wrappers. But that more important !! I can work without this))) Directly use configuration files of services and etc etc. Usually, it is better way on dedicated servers. )
TCP, IPv4 , IPv6, IPX ... - WiFi, WEP, WPA, WPA2 ... - SElinux, Apparmor, Smack, Tomoyo ... - LAMP ( Apache, Nginx, PHP, Perl, Mysql, Mongo), REDMINE ... - Cpanel, Zpanel, ISP ... - MySQL clustering and replication
DNS servers ... - SENDMAIL, EXIM, POSTFIX (POSTFIXADMIN,MYSQL,DOVECOT,POLICYD) ... - HPC system: Torque, Maui, Moab for HPC clusters, Infiniband, FC interconnect, iSCSI, SCST, DRBD, OFED, OPENMPI ... - OpenLDAP ... - VPN with OpenVPN, PPTP, StrongVPN ... - Nagios, Zabbix, Ganglia, OSSEC ... - SVN, CVS, GIT ... -
KVM, Xen, OpenStack, Proxmox ... - NBD, RAID, LVM ... etc etc
During these years I have been in a large number of tasks related to administration of network devices, as well as with simple and complex server systems. I manage servers for the HPC tasks and for network infrastructure of Internet and Intranet - DNS,DHCP,*FTP,HTTP(S),MAIL etc etc. The main goals - the monitoring of the performance and the security. I also implement tasks of data backup and troubleshooting, support for the users.
I have comprehensive work skills with systems based on Debian, Redhat, CentOS, SLES, OpenSuse.
I've got more than 8 years of experience in developing the different software with use of C, Perl, Python, Bash, HTML on system and user levels.
For example, very important skill in developing and the modification of RPM packages (rpmbuild, rebuild, kernels), custom kernels and etc etc.
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Often:
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How the standart service for VPS's and VDS's projects and dedicated servers: IDS, IPS, the control of contents of log's files, the control of load of the cpu, the memory, the hard disks; the backups of the databases and the files; install or update software, consultations. Emergency call via sms to cell phone.
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STOP Windows and U/K/buntu etc.
TIPS WITHOUT PAYMENT:
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1. VERY OFFTEN: IF YOURS WP WAS HACKED
1. disable plugins
2. execute # diff -r dir1 dir2
3. repeat for plugins
if you have last version of WP code:
~ 80% cases - problems: plugin low quality (look on author: from where and who is)
~ 15% cases - problems: theme low quality (look on author: from where and who is)
~ 5% 0day of WP
also you need disable all shell function in php and enable suphp/suexec modes.
STOP Windows and U/K/buntu etc.
TIPS WITHOUT PAYMENT:
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1. I am getting a lot questions about reliability and quality distributives/clones Ubuntu.
Results on practice - Ubuntu clones - worst for server. It is truth. If you $buntu guy, I can't help you right now. I only can recommend Debian way for server.
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3. Nginx of course is good program. For small/middle vps. But in serious projects - apache. Nginx will be suitable for frontend. It is only practice.
Always for all web application should be mod_security module. Firewall of level of web application on 7 level of OSI. Each web application/site should be under own user in environment of vps or on dedicated servers.
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4. By topic Wordpress. For optimisation services of OS , namely system IO(type of disks or partitions) and DB(type of engines of tables), need to use empty installation (default variants). Most problems of work WP contains in itself - customized plugins or themes. For analyze pages need begin with such services as http://gtmetrix.com.
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Sunday - day of rest. Or in emergency case - payment with double rate.
best regards, Andrei
odesk.by / upwork.link
PS: With love from USSR. ;-)

administrator of Computer Networking and Information Systems Security

Morocco
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Last active: 11 days ago
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Tests: 2
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Portfolio: 1

2012-2014 : Master Degree in Information Systems Security
2011-2012 : Bachelor Degree in Sciences of Networking & Telecommunication
2009-2011 : Degree at University of Technologies in Networks
As I have a diverse experience in Network and System Administration, particularly with the Cisco , I would be able to contribute effectively to your bottom line. I have a special expertise in network design and security, devices implementation, users training and network maintenance on day-to-day basis. Owing my relevant qualifications and skills, I can offer you reduced overheads and expenditures by procuring most efficient and economical devices and utilizing limited resources efficiently.

Senior Software Engineer, Data Warehouse Specialist, Technical Writer

Egypt
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Last active: 3 months ago
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Tests: 5
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Portfolio: 7

Over the last 9 years, I have been developing software applications in different domains like desktop applications for small businesses and websites for different applications.
I have experience in the following areas: Object oriented design, design patterns, software architecture, JAVA, C/C++, C#, ASP.NET, PHP, Zend, MySQL, MSSQL, jQuery and others.
My core edge lies in applying my experience and skills to develop software solutions that satisfy various client's needs and to establish solid relationships with my clients.

.NET / Mobile Apps / XMPP / PKI

Philippines
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Last active: 09/13/2011
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Tests: 4

Started working as a freelance developer. I am currently an IT professor but writing codes is still my passion. Seeking opportunities to create applications for your business.I have good working knowledge about mobile apps, OOP, PKI, XMPP and email applications.

Systems Engineer

United States
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Last active: 01/15/2014
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Tests: 2

I love systems. Primarily working with GNU/Linux, there is nothing we can't do. Having experience with mail, web, IRC, proxy, DNS and virtual machine servers, as well as having an edge in security, you can count on me to work your servers in a tidy and timely manner. I also enjoy working with people and relaying my findings so that we can advance our understanding in unison.

Ethical Hacker and Digital Forensic Investigator

Mexico
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Last active: 12/03/2014
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Tests: 3

For the past seven years, I have been learning about the information security world, working as an CEH (Certified Ethical Hacker). With some of my co-workers, i have participated in a lot of projects, strictly focused on Information Security.
Also, as we evolve and grow in this area, we have trained ourselves in Forensics Sciences, attending clients who need to know what happened after a contingency.
I consider myself a self-taught person that likes to grow and that is not afraid of challenges or difficult cases.
At this moment my priority is to teach and so much to share the little knowledge I have gained over the years, as well as learn from those who have traveled a different path and with this keep on growing.

Engineer

Bangladesh
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Last active: 5 months ago
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Tests: 8
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Portfolio: 2

I am a CSE graduate. I am fluent in english. I am expert in C, C++, Java, C-Sharp, HTML, Java Script, PHP, Oracle etc. I am also experienced in data entry job. I have completed many projects in my academic career. I am well aware of current technology and try to learn new thing in my free time. I like to do freelancing because it increase my skill day by day. I am honest with my job. I like to watch movies, tv shows in my free time. I you want to know more about me mail me at mamunn.08@gmail.com or contact me in facebook : facebook.com/paikmari.
Thank You for staying with me. Have a good day :)